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Finding the Fourth Proportional to 504,864.48, 696,588.72 and 308,581.28

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Solution

The fourth proportional to 504,864.48, 696,588.72 and 308,581.28 is: 425,766.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,864.48 : 696,588.72 = 308,581.28 : x
  2. Step 2: Convert to fraction form
    504,864.48/696,588.72 = 308,581.28/x
  3. Step 3: Cross multiply
    504,864.48x = 696,588.72 × 308,581.28
  4. Step 4: Simplify right side
    504,864.48x = 214,954,238,851.16
  5. Step 5: Solve for x
    x = 214,954,238,851.16/504,864.48
  6. Step 6: Final answer
    x = 425,766.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.